part of a bigger battle for control of aleppo, syria's largest city. this father of four is one of the rebel fighters here. this is our country, our homes that are being destroyed, he tells us. he used to sell thread. now he runs logistics for his unit. so what he is explaining to us is that this was street to street fighting, and it took his unit quite some time to advance, and right now they have the tractor here because they're trying to clear out this road so that balances and vehicles can begin to move through. blankets hang across one alleyway to block government snipers' line of sight. the shooting is coming from there. the sniper, one of the fighters points out. they take us further forward. crawling through holes punched between buildings. they're just telling us that it's because of the snipers that they have to move through these buildings like this. it's an urban version of first world war trenches. they've edged forward by just one block. going any further is back breaking work. a rebel dashesstre street carrying a makeshift rocket launche